Sealing-head for filling-tubes for liquids.



,242. PATENTED FEB. 4, 1908.

A. SCHNEIDER. SEALING HEAD FOR FILLING TUBES POR LIQUIDS.

APPLICATION FILED APR. 26,1907.

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UNITED sTATEs PATENT oEEioE.

ADOLPH SCHNEIDER, OF CHICAGO, ILLINOIS.

SEALING-HEAD FOR FILLING-TUBES FOR LIQUIDS.

Application filed April 26| T o all whom 'it may concern:

Be it known that I, AnoLPr-r SCHNEIDER., a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Im rovements in Sealing-I'Ieads forFilling-Tubes for Liquids, of which the following is a specification.

The bottling or packaging of liquids, particularly liquids containingcarbonio acid gas under pressure, necessitates the equalization of thepressure between the tank containing the liquid and the to-be -Iilledbottle or package. 'lhe sealing ofthe mouth or end of the bottle shouldbe perfect and complete, and furthermore, the escape of the liquid,through the sealing head, into the pressure supplying tube, should beavoided.

The object of the present invention is to construct a sealing head for a'filling tube which will enable a perfect and complete seal to beobtained for the mouth of the bottle or package and which, at the sametime, will prevent the flow of the liquid. into the pressure supplytube; to construct a sealing head having a gasket or cushion, forsealing the mouth or end of the bottle or package, and a chamber forreceiving pressure thereinto, and controlled by a positively raisedvalve for admitting pressure, and an automatically raised valve forclosing the chamber againstI the admission of liquid to the pressuresupply tube; to construct a sealing head for a liquid supply tube with amovable sleeve and arm operated by the insertion of a bottle, andserving to raise a valve for admitting pressure to a chamber in thesealing head, and equalizing the pressure between the -lilling tank andthe to-be filled package orbottle, to construct a sealing head movableon a -fixed 'filling tube for liquid, and having a chamber for receivingpressure, and a valve positively raised for admitting pressure to thechamber, in equalizing the pressure between the bottle or package andthe iilling tank; to construct a sealing head slidable on a fixed liquidsupply tube and packed around the tube, and having a sleeve with alateral arm for operating a valve controllingl the induction andeduction of pressure from a chamber in the sealing head and to improvegenerally the construction and arrangement of the several parts orelements entering into the formation Specification of Letters Patent.

Patented Feb. 4,v 1908.

1907. Serial No. 370.411.

of the sealing head as a whole, and its use with a pressure supply tubeand a liquid supply tube.

The invention consists in the features of construction and combinationsof parts hereinafter described and claimed.

In the drawings illustrating the invention, Figure 1 is a sectionalelevation of the sealing head, the pressure supply tube, and the likedsupporting tube, with the liquid supply tube partly in section andpartly in full elevation, and showing the sealing head in its normal orat rest position; Fig. 2 a similar view to F ig. l, showing, however,the sealing head and the slidable tube therefor partly raised orelevated, for opening the sealing` head and inducting and eductingpressure into and from the bottle, Shown by dotted lines, with theliquid tube closed against th'e discharge of liquid, and Fig. 3 asimilar lview to Fig. l, with the sealing head and the slidable tubetherefor raised or elevated, and with the liquid tube entered into thebottle, shown by dotted lines, so as to open the valve at the lower endof the liquid tube, for discharging liquid into the bottle, and showingthe controlling valve for inducting and educting pressure closed by theadmission of liquid to the chamber of the sealing head.

The construction of sealing head of the present invention has a head 1,terminating, at its lower end, in an annular flange 2, forming a recessand having an interior screw thread for the flange. The head has,entered into the flange 2 at its lower end, a neck 3 of an annular ring4, having a shoulder 5, on its upper side, and a tapered or inclinedface 6 on its inside, the face Vforming an opening 7, for the enteringthereinto of the mouth or upper end of the bottle or package.

The neck or vflange 3, with the shoulder 5, and the under face of thehead 1, form a recess to receive a sealing gasket or cushion 8, havingan inclined or tapered face 9, which forms a tapering hole 10, throughthe sealing gasket or cushion, inline with the end of the bottle orpackage, when inserted in position for 'filling A sleeve l1 lies withinthe opening 10, when the parts are in normal position, as shown in Fig.1, and this sleeve has a central hole for the passage of the lower endof a Iixed supplytubc for liquid, which hole forms a space or passage 12around the lower end of the lling tube. The iilling tube 13 is of anysuitable construction, and when the sealing head is normal, or at rest,the lower end of the filling tube lies within the opening 7 of thesealing head, in the construction shown, and, as shown, the lower ordischarge end of the i'illing tube has a discharge port 14, surroundedby a valve seat 15, with which coacts a valve 16 on a stern 17, and, asshown, a weight 18 extends upwardly from the valve in the interior oithe vfilling tube, which weight serves to return the valve to its closedposition, and to hold the valve in its closed position.

The slidable sleeve 11 has, on one side, a laterally extending arm 19,which is free to move in a lateral extension 20, of a chamber 21 inwhich the sleeve can be raised Jfor openingthe controlling valve andinducting and educting pressure into and from the chamber 21, in theoperation ofthe sealing head. The slidable sleeve 11, as shown, does notquite ll the diameter of the chamber 21, leaving a space or passage 22,between the wall oi the chamber and the outer faceof the slidablesleeve, through which space, as well as through the space or passage 12,pressure between the filling tank and the bottle is free to be inductedand educted, and in addition, the spaces 12 and 22 allow liquid to ilowinto the chamber 21, when the bottle or package is filled; 'but ifdesired, either one of the spaces or passages, 12 and 22, could beomitted and one space or passage be made to serve the oiiice ofinducting and educting the pressure. A chamber 23- extends upwardly fromthe chamber 21, and has entered thereinto a packing ring 24, compressedby a ring nut or follower 25, so as to make a tight close joint aroundthe filling tube against the escape of pressure and liquid from thechamber 21 in the operation of the sealing head.

A chamber 26 extends upwardly from the lateral vcontinuation 20 of thechamber 21, and terminates in a cross wall'27, having a port 28, with avalve seat 29 around the port in the under face of the cross wall, and a,valve seat 30 around the port in the upper face of the cross wall, andthe port opens into a chamber 31 in the head 1, which chamber is closedby a plug 32 screw threaded, or otherwise entered into the head.

A float 33 is located and operates in the lateral extension 2O of thechamber 21 and the vertical chamber 26, and this float 33 carries avalve stem 34 having, at its lower end, a valve 35, to coact with'thevalve seat 29, and having, at its upper end, a valve 36, to coact withthe valve seat 30, Jfor opening and closing the port against the passageof pressure and liquid through the port, according to the position ofthe float. A lateral port 37 leads from the chamber 31 into a chamber38, formed in theend ofthe head 1, into which chamber pressure isadmitted in inducting and educting pressure between the tank and theto-be filled bottle or package.

The sealing head, of the present invention, is adapted for, and intendedto be used with any suitable arrangement of iilling tube f and pressuresupply tube. The arrangement shown has a passage 39, in an endwiseslidable tube 40, which passage. is in direct communication with thechamber 38 of the head, and serves as a conducting passage for pressure.The endwise slidable tube 40, at its upper end, has a head 41, with apacking ring 42, forming a piston, which piston is located within theinterior of a fixed supporting tube, the lower end of which supportingtube has a coupling 43, formed of an annular wall and an end Wall,through which end wall the body of the tube 40 is free to slide.

The ixed supporting tube 44 furnishes a chamber or passage 45, betweenits interior face and the exterior face of a fixed tube 46, the lowerend of which, when the parts are in normal position, or at rest,projects into the passage of the endwise slidable tube 40 and the lixedcentral tube 46 encircles the iixed liquid supply tube 13, so as tofurnish aspace or passage 46, for conducting pressure.

The .upper end of the Vixed. supporting tube 44 is closed by a plug 48,having a passage 49, for admitting pressure into and escaping pressurefrom the chamber 45, so that the admitted pressure will act against thepiston on the endwise slidable tube 40, and return such tube to normalposition, as shown in Fig. 1, and the pressure will escape from thechamber 45, through the passage 49, with the raising or elevating of theendwise slidable tube, from the inserting of the bottle into the sealinghead into position, for equalizing the pressure and receiving theliquid.

The plug and the'wall of the fixed supporting tube, have a lateralpassage 51 communicating with the interior of the tank above the liquidin the tank, as does also the passage 49 in the plug. The plug 48 has acentral hol'e or passage 52, into which is entered the upper end of theliquid supply tube 13, also the curved end 53 of a siphon tube having aleg 54, by means of which the liquid can be siphoned from the 'fillingtank into the liquid supply tube, for discharge into the bottle orpackage.

The construction shown has, around the exterior of the tu'be or casing44, a flange 55, with a neck 56 having ascrew threaded exterior, andreceiving a ring nut 57, by means of which the supporting tube or casing44 is xedly attached to the wall of the tank, for the lower portion toextend below the wall of the tank, and the upper portion to lie withinthe tank, as does also the upper portion of the fixed liquid supply tubeand the center guide tube, both of which are suspended, or carried, bythe plug 4S at the upper end of the iixed supporting tube.

The present invention relates solely to the construction and operationol the sealing head, and such operation is all that need be-vspeciiically described, it being understood that the 'lilling tube, theendwise slidable carrying tube of the sealing head, and the pressuresupply tube, and the manner of supporting the various tubes, can bevaried or changed, so long as the arrangement ol the tubes is such as toenable liquid to be discharged into the bottle or package and thepressure to be equalized between the filling tank and the bottle orpackage through the sealing head.

The operation of the sealing head will be understood from the foregoingdescription, but briefly is as `follows: The sealing head is shown inFig. 1 in normal position 'for receiving a bottle or package, and innormal position the sleeve 11, with its lateral arm 19, is down, withthe vfloat 33 resting on,.or in adjacent relation to the lateral arms.The float 33, with the valve steni 34, are in their lower positioii, andthe valve 36 seats against the 'face 30, closing the port 28, andshutting ofi the flow of pressure into the chamber 21 from the fillingtank. The valve 16 is seated against the face 15, ot' the port 14,shutting ofi' the llow of liquid through the filling tube 'from the'lilling tank. The neck end of the bottle is inserted into the opening10 of the sealing gasket or cushion S, so as to seal the vmouth of thebottle against the escape of pressure and liquid around ythe exterior ofthe neck, and the act of fully inserting the neck end of the bottle, inposition to be encircled by the sealing gasket or cushion, raises theslidable sleeve or collar 11, with its lateral arm 19, into the positionshown in Fig. 2. The raising of the slidable sleeve or collar, with itslateral arm, as shown in Fig. 2, raises the float 33, and with it thestem 311, and the valves 35 and 36, for the valve 36 to clear its seat30 and open the port 2S, for free coinniunication between the upper sidechamber 31 and the lower side chamber 26, for pressure to low throughthe space or passage 39, into the receiving chamber 3S, and through thelateral port 37, into the chamber 31, and pass through the port 27, intothe chamber 32, and escape into the chamber 21, to discharge from thechamber 21, through the passage 12, or the passage 22, into the bottleor package, equalizing the pressure between the filling tank and thebottle or package. The Jfurther or continued elevation of the bottle orpackage, with its neck end in the opening therefor of the sealing gasketor cushion, causes the stein 17 of the valve 16,

to strike the bottoni ol the bottle or package,

and open the port 14, for liquid to discharge into the bottle from thefilling tank, lling the bottle with liquid against the counter pressure,or equalized pressure, between the bottle or package and the vlillingtank. The continued rise of the liquid within the bottle o1 packagelorces out the pressure which escapes iiito the chamber 21, and Vl'lowsinto the chamber 26, passing through the port 28 into the chamber 31,and entering the chamber 23S from the lateral port S7, to return, by thepassage 39, to the lilling tank. The liquid, after the bottle has beenilled to its `full capacity, escapes through the passages 12 and 22, oreither one of said passages, into the chamber 21, and as the liquidrises in the chamber 21, it will cause the l'loat 33 to rise 'for thevalve 35 to seat against the valve seat 2.) and close the port 28,shutting o'fl' the 'llow of liquid through the port and the consequentfilling ot the pressure supply passage between the :filling tank and thesealing head, thus insuring safety against liquid entering the pressuresupply passage. The liquid discharged into the chamber 21 will [low backinto the bottle, as the bottle is withdrawn from the filling tube, andthe capacity of the chamber, when the 'lloat is raised, should besui'licient to contain the amount of liquid required to completely lillthe bottle or package when the bottle or package is withdrawn from the`lilling tube.

The sealing head, ol the present invention, etl'ectually and positivelyseals the mouth of the bottle loil eil'ectiiig an equalized pressurebetween the filling tank and th(` bottle or package, and against theescape ol pressure and liquid in llliiig the bottle; and the entering ofthe neck end of the bottle into the sealing gasket or cushion raises theslidable collar` or sleeve and the lateral arm, for the arm to raisethe['loat and open the connecting port between the upper and 'lower sidechamber, l'oi admitting pressure from the tank to the bottle or package,thus equalizing pressure between the tank and the bottle or package, andwith the l'uithei' elevation ol the bottle the '['illing tube is enteredinto the bottle or package, lor the stem of the controlling valve at itsdischarge end, to engage the bottom oi' the bottle or package, and openthe controlling valve, permitting liquid to ilow into 'the bottle, andwith the complete 'filling olE the bottle, and the overflow of theliquid into the chamber above the sealing gasket or cushion` the floatis raised so as to close the port between the upper and lower sidechambers, shutting ol the escape ol' pressure through the port, and

preventing liquid Al'i'oni ilowing through the port into the pressuresupply passage between the 'filling tank and the sealing/head. rlhcsealing head ol the pieseiit invention, l'urnishes a perlect andcomplete seal 'lor the end of the bottle or package, and, by theinsertion of the end of the bottle or package into the sealing gasket orcushion, communication is established for admitting'pressure to thebottle or package from the filling tank, for equalizing the pressure;and lwith the further raising of the bottle or package, liquid isdischarged into the bottle or package, and serves as a medium forraising the iioat, and shutting ofi' the flow of liquid into thepressure supply passage between the filling tank and the sealing head.ltwill thus be vseen that with the sealing head of the present inventiona perfect and absolute control of the pressure, and a complete stoppageofthe liquid into the pressure supply passage is obtained, and thisthrough the act of' entering the bottle or package inte fillingposition, and the overiiow of the liquid from the bottle or package,making the control of' the pressure and the liquid dependent solely onthe insertion and withdrawal of the bottle or package.

While the sealing head is shown and described in connection with a fixedfilling tube, it is to be understood that the sealing head could be usedfixed instead of slid able, and the filling tube be made to slide in thesealing head, without in any manner changing the operation of the shutoli' for pressure and liquid. The induction and eduction chambers forthe pressure, instead of being arranged as shown, at one side of thehead, could be otherwise arranged, so long as the arrangement andconstruction would furnish chambers in communication with each other,and having the communication controlled by a valve, with the valvepositively raised to open communication for admitting and eductingpressure, and automatically raised by the inow of liquid into the lowerchamber to act on a float, or other device, by which the valve 'would beraised to prevent the outflow oi' liquid into the tube supplyingpressure.

What l claim as new and desire to secure by Letters Patent is:

1. In a sealing head for filling tubes, the combination of a head havinga central lower chamber, a lateral extension of the central lowerchamber, an upper and lower side chamber in a common vertical plane withthe lateral extension at one side of the central lower chamber, alateral passage inwardly leading from the lower end of the upper sidechamber, and an upper central chamber into which the lateral passageopens, and a lioat actuated valve controlling communication in bothdirections between the upper and lower side chambers, substantially asdescribed. f

2. ln a sealing head for filling tubes, the combination of a head havinga central lower chamber, a lateral extension of the central centralchamber, a lateral passage leading from the upper side chamber, and anupper central chamber into which the lateral pas- 'sage opens, aslidable collar, an arm laterally extending from the sliding collar,with the collar and arm operative in the central lower chamber and itslateral extension, a fioat engaged by and initially raised by thelateral arm, a stem carried by they float, and a valve at each end ofthe stem controlling communication between the upper and lower sidechambers, substantially as described.

3. In a sealing head for filling tubes, the combination of a head havinga central lower chamber, a lateral extension of the central lowerchamber, an upper and llower chamber in a common vertical plane at oneside of the central chamber, a lateral passage leading from the upperside chamber', and an upper -central chamber into which the lateralpassage opens, a slidable collar, an arm laterally extending from thesliding collar, with the collar and arm operative in the central lowerchamber and its lateral extension, a float engaged by and initiallyraised by the lateral arm, a stem carried by the float, a valve at eachend of the stem, and a cross wall between the upper and lower sidechambers and having a port controlled by the valves on the valve stem,substantially as described.

4. In a sealing head for filling tubes, the combination of a head havinga central lower chamber, a lateral extension of the central lowerchamber, an upper and lower chamber in a common vertical plane at oneside of the central chamber, a lateral passage leading from the upperside chamber, and an upper central chamber into which the lateralpassage opens, a slidable collar, an arm laterally extending from thesliding collar, with the collar and arm operative in the central lowerchamber and its lateral extension, a float engaged by and initiallyraised by the lateral arm, a stem carried by the Heat, a valve at eachend of the stem controlling communication between the upper and lowerside chambers, and a filling tube extending through the head andencircled by the sliding collar, with a passage between the filling tubeand the the slidable collar, substantially as described.

5. ln a sealing head for filling tubes, the combination of a head havinga central lower chamber, a lateral extension of the central lowerchamber, an upper and lower chamber in a common vertical plane at oneside of the central chamber, a lateral passage leading from the upperside chamber, and an upper central chamber into which the lateralpassage opens, a slidable collar, an arm laterally extending from thesliding collar, with the collar and arm operative in the central lowerchamber and its lateral extension, a {ioat engaged by and initiallyraised by the lateral arm, a stem carried by the float, a valve at eachend of the stem controlling communication between the upper and lowerside chambers, and a pressure sup ply tube having a passage incommunication with the upper central chamber of the head, substantiallyas described.

6. In a sealing head for filling tubes, the combination of a head havinga central lower chamber, a lateral extension of the central lowerchamber, an upper and lower chamber in a common vertical plane at oneside of the central chamber, a lateral passage leading` from the upperside chamber', and an upper centra-l chamber into which the lateralpassage opens, a slidable collar, an arm laterally extending from thesliding collar, with the collar and arm operative in the central lowerchamber and its lateral extension, a `float engaged by and initiallyraised by the lateral arm, a stem carried by the float, a valve at eachend of the stem controlling communication between the upper and lowerside chambers, a filling tube extending through the head and encircledby the sliding collar, with a passage between the Vhlling tube and theslidable collar, and a pressure supply tube having a passage incommunication with the central upper ch amber of the head, substantiallyas described.

, 7. In asealing head for filling tubes, the combination of a headhaving a central lower chamber, a lateral extension of the central lowerchamber, an upper and lower chamber in a common vertical plane with thelateral extension at one side of the central chamber, a lateral passageinwardly leading from the upper side chamber, and an upper centralchamber into which the lateral passage opens, a 'float actuated valvecontrolling communication in both directions between the upper and lowerside chambers, and a sealing gasket carried by the sealing head andengaging and sealing the entered end ol a bottle, substantially asdescrilwd.

8. In a sealing head lor VIilling tubes, the combination of a headhaving an upper central and lower central chamber for inducting andeducting pressure, an upper and lower side chamber in communicationrespectively with the upper and lower central chambers and with eachother, and a valve controlling communication between the two sidechambers, said valve positively raised by the insertion of a bottle, toopen communication and automatically raised by the admission of liquidto close communication between the two chambers, substantially asdescribed.

9. ln a sealing' head lor Vlilling tubes, the combination of a headhaving an upper central and lower central chamber', an upper and a lowerside chamber in communication respectively with the upper and lowercentral chambers and with each other, for inducting and cductingpressure, a valve controlling communication between the two sidechambers, a illoat carrying the valve,

and means for positively raising the valve bythe insertion of thebottle, for opening communication between the two side chambers and theupper and lower central chambers, substantially as described.

ADOLPH SCHNEIDER.

Titnessesz OSCAR W. BOND, WALKER BANNiNo.

